Reland "Remove CPDF_Object::Release() in favor of direct delete"

testing/libfuzzer/pdf_codec_jbig2_fuzzer.cc

 // Copyright 2016 The PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cstdint>
 
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/parser/cpdf_stream_acc.h"
 #include "core/fxcodec/JBig2_DocumentContext.h"
 #include "core/fxcodec/codec/ccodec_jbig2module.h"
@@ skipping 11 matching lines @@
 
   uint32_t width = GetInteger(data);
   uint32_t height = GetInteger(data + 4);
   size -= kParameterSize;
   data += kParameterSize;
 
   std::unique_ptr<CFX_DIBitmap> bitmap(new CFX_DIBitmap);
   if (!bitmap->Create(width, height, FXDIB_1bppRgb))
     return 0;
 
-  std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> stream(
-      new CPDF_Stream);
+  std::unique_ptr<CPDF_Object> stream(new CPDF_Stream);
   stream->AsStream()->SetData(data, size);
   CPDF_StreamAcc src_stream;
   src_stream.LoadAllData(stream->AsStream(), true);
 
   CCodec_Jbig2Module module;
   CCodec_Jbig2Context jbig2_context;
   std::unique_ptr<JBig2_DocumentContext> document_context;
   FXCODEC_STATUS status = module.StartDecode(
       &jbig2_context, &document_context, width, height, &src_stream, nullptr,
       bitmap->GetBuffer(), bitmap->GetPitch(), nullptr);
 
   while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE)
     status = module.ContinueDecode(&jbig2_context, nullptr);
   return 0;
 }